Failing to pay workers for travelling between jobs, not paying overtime, and deducting money for uniforms were some of the reasons for the underpayments.

Business minister Andrew Griffiths said: "There are no excuses for shortchanging workers.

"This is an absolute red line for this Government and employers who cross it will get caught - not only are they forced to pay back every penny but they are also fined up to 200 per cent of wages owed.

"Today's naming round serves as a sharp reminder to employers to get their house in order ahead of minimum wage rate rises on April 1."

On that date, the National Living Wage will go up to £7.83 per hour. This the rate paid to workers over 25 years old workers, which currently stands at £7.50.

The minimum wage is also set to rise for millions of workers next month.